Boxes & Mailers

SELECTION EXPERT ADVICE

Wall Strength & Load Capacity
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Match single-, double-, or triple-wall corrugated construction to your product weight to prevent in-transit damage and minimize costly returns.
Dimensional Weight Cost Control
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Right-sized boxes cut carrier DIM weight charges, selecting the optimal LxWxH for each SKU directly lowers your per-shipment freight cost.
Mailer Box vs. RSC: Choose Correctly
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Self-locking mailer boxes suit branded DTC shipments; traditional RSC corrugated boxes are ideal for palletized B2B and high-volume fulfillment.

Need help choosing boxes?

Pick the right corrugated box without overpaying for size or strength

Use these buying guides to size your box, compare board strength, and avoid dimensional weight surcharges.

Corrugated Boxes Guide → How to choose size, strength, and wall type Box Size Calculator → Find the smallest safe box for your product 32 ECT vs 200 lb Test → Which board strength rating fits your shipment
Overview

3,094 corrugated boxes, literature mailers and mailing tubes from 2 to 36 inches, mostly ECT-32 kraft and white, sold in bundles of 10 to 50. Each listing shows inside dimensions, board grade and bundle count so you can match a carton to the part you ship. Orders ship from five US regional warehouses; for mixed or recurring orders use the bulk quote path with SKU, quantity and destination ZIP.

Related collections

IN STOCK Reduce shipping costs and damages with ECT-32-B crush-resistant corrugated mailers sized 9x6x3. These one-piece fold-and-tuck mailers require no tape, glue, or staples–assembly takes seconds. Sold in 50-pack bundles for maximum volume savings.
Boxes - Mailers

9x6x3 ECT-32-B White Corrugated Mailers 50-Pack

PN: M963

9 x 6 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$71.40 / BUNDLE
IN STOCK Ship small items safely with these ECT-32-B white corrugated mailers featuring crush-resistant, one-piece fold-and-tuck design. Each 9x6x2 mailer assembles in seconds–no tape, glue, or staples required. Bundle of 50 reduces per-unit cost and labor while providing double-wall protection on front and sides.
Boxes - Mailers

9x6x2 ECT-32-B White Corrugated Mailers 50-Pack

PN: MLR962

9 x 6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$65.32 / BUNDLE
IN STOCK One-piece corrugated mailers in 9" x 6" x 1" dimensions with ECT-32-B crush-resistant construction. Fold-and-tuck design requires no tape, glue, or staples–assemble in seconds. Bundle of 50 units optimized for shipping lightweight items with double-wall protection on front and sides.
Boxes - Mailers

9x6x1 ECT-32-B White Corrugated Mailers 50-Pack

PN: MLR961

9 x 6 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$64.56 / BUNDLE
IN STOCK Heavy-duty ECT-32-B white corrugated mailers engineered for small-to-medium shipments. One-piece fold-and-tuck design provides double-wall crush resistance on front and sides–no tape, glue, or staples required. Ships 50 per bundle to maximize your fulfillment efficiency.
Boxes - Mailers

9x5x5 ECT-32 White Corrugated Mailers 50-Pack

PN: M955

9 x 5 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$72.92 / BUNDLE
IN STOCK Ship small, lightweight items without compromise. These 9x5x4 white corrugated mailers feature ECT-32-B construction with crush-resistant double walls that fold to size in seconds–no tape, glue, or staples required. Sold as a bundle of 50 to maximize your packaging efficiency and reduce per-unit costs.
Boxes - Mailers

9x5x4 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M954

9 x 5 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$69.88 / BUNDLE
IN STOCK Save on labor and postage with our one-piece fold-and-tuck white corrugated mailers. Built from ECT-32-B material with dual-wall crush resistance on front and sides. Bundle of 50 ships fast–no tape, glue, or staples required.
Boxes - Mailers

9x5x3 ECT-32-B White Corrugated Mailers 50-Pack

PN: M953

9 x 5 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$58.49 / BUNDLE
IN STOCK Ship small items faster and cheaper with these one-piece white corrugated mailers. ECT-32-B material delivers crush-resistant protection with zero assembly time–just fold and seal. 50-pack bundle keeps your fulfillment costs low and your warehouse efficient.
Boxes - Mailers

9x5x2 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M952

9 x 5 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$54.69 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B white corrugated mailers featuring one-piece fold-and-tuck construction. Double-wall crush-resistant design on front and sides eliminates the need for tape, glue, or staples–assembled in seconds. Bundle of 50 mailers reduces per-unit costs and freight spend.
Boxes - Mailers

9x4x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M944

9 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$43.51 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B white corrugated mailers in 9x4x3 dimensions. One-piece fold-and-tuck design eliminates tape, glue, and staples while delivering double-wall crush resistance on front and sides. Bundle of 50 reduces per-unit costs and keeps inventory stocked.
Boxes - Mailers

9x4x3 ECT-32-B White Corrugated Mailers 50-Pack

PN: M943

9 x 4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$33.53 / BUNDLE
IN STOCK Heavy-duty 9x4x2" one-piece corrugated mailers with ECT-32-B rated crush resistance. No tape, glue, or staples required–fold and ship in seconds. Perfect for small lightweight items. Sold as bundle of 50.
Boxes - Mailers

9x4x2 ECT-32 White Corrugated Mailers 50/Bundle

PN: M942

9 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$48.61 / BUNDLE
IN STOCK Ship small, lightweight items with confidence using these 9x3x3 white corrugated mailers. Engineered from ECT-32-B material with crush-resistant double-wall construction, they fold flat for easy assembly–no tape, glue, or staples required. Each 50-pack bundle maximizes freight efficiency and reduces postage costs per unit.
Boxes - Mailers

9x3x3 ECT-32-B White One-Piece Corrugated Mailers 50-Pack

PN: M933

9 x 3 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$27.88 / BUNDLE
IN STOCK Crush-resistant one-piece white corrugated mailers built from ECT-32-B material. No tape, glue, or staples required–fold and ship in seconds. Sold as a bundle of 50 units to maximize volume savings for warehouse operations.
Boxes - Mailers

9x3x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M932

9 x 3 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$39.50 / BUNDLE
IN STOCK Premium ECT-32-B white corrugated mailers in 9x2x2 dimensions designed for lightweight parcel and fragile item shipments. One-piece folding design with dual-wall crush resistance–no tape, glue, or staples required. Order in bundles of 50 and reduce assembly time while protecting your products.
Boxes - Mailers

9x2x2 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M922

9 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$18.99 / BUNDLE
IN STOCK Heavy-duty ECT-32-B white corrugated mailers engineered for small parcel protection without tape or glue. One-piece fold-and-tuck design delivers double-wall crush resistance on front and sides. 8" cube dimensions–50 mailers per bundle.
Boxes - Mailers

8x8x8 ECT-32 White Corrugated Mailers 50/Bundle

PN: M888

8 x 8 x 8 in ECT-32-B Corrugated 50 PER BUNDLE
$99.50 / BUNDLE
IN STOCK Premium ECT-32-B white corrugated mailers in 8x8x6 dimensions deliver dual-wall crush resistance and lightweight performance that reduces postage costs. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Perfect for fulfillment centers shipping fragile items with confidence and efficiency.
Boxes - Mailers

8x8x6 ECT-32-B White Corrugated Mailers 50-Pack

PN: M886

8 x 8 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$86.59 / BUNDLE
IN STOCK Heavy-duty 8x8x5 white corrugated mailers with ECT-32-B strength rating for maximum crush resistance and double-wall protection. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Bulk 50-pack reduces material costs while maintaining superior freight efficiency for e-commerce and fulfillment operations.
Boxes - Mailers

8x8x5 ECT-32 White Corrugated Mailers 50-Pack

PN: M885

8 x 8 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$91.91 / BUNDLE

Product Help Request

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Buying path

Buy Boxes & Mailers by the specs that change the order

Use filters, product titles, and product pages to compare size, material, pack count, case quantity, and fit before ordering.

Compare

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Confirm

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Reorder

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Larger orders

For pallet, recurring, or mixed-SKU orders, send your list and ZIP and get a delivered price by email.

What to check first

  • Inside dimensions
  • Board grade or strength rating
  • Box style and closure
  • Case or bundle quantity
Common wrong-order risk: Choosing the outside size instead of the inside size. Confirm product fit, void fill, and storage space before ordering.
Use the box size finder -> Get a delivered quote for larger orders -> Compare corrugated box types -> View products below ->